DSP Sub Box Replacement Speakers?? | BimmerFest BMW Forum
Sharing audio upgrade on my non-DSP in '99 528iT. Kept OEM headunit/cassette (for looks mostly). Replaced stock speakers with Bavsounds & replaced OEM CD changer with GROM bluetooth which punches above its
BMW E39 5 SERIES REAR DECK SUBWOOFER TOP HIFI SPEAKER
2001-03 BMW E39 540i 530i DSP REAR DECK SUBWOOFER Hi Fi SPEAKER 6908549 | eBay
How to replace your DSP Amp with an aftermarket unit.